The title compounds, C21H22N2O2S (I) and C18H15N3O4S (II), are structural analogs of the alkaloid Thio&shy;sporine B. Both mol&shy;ecules adopt a near-planar V-shaped conformation, which is consolidated by intra&shy;molecular N&mdash;H&#8943;N and C&mdash;H&#8943;O hydrogen bonds. The crystal structure of (I) consists of mlecular stacks along the a axis, in which the mol&shy;ecules are linked to each other by &pi;(S)&#8943;&pi;(C) inter&shy;actions. In the crystal of (II), mol&shy;ecules are linked into chains by C&mdash;H&#8943;O hydrogen bonds and the chains are cross-linked into (100) sheets by &pi;&ndash;&pi; stacking inter&shy;actions.

Mentions:
In (I), the crystal packing consists of stacks along the a axis (Fig. 3 ▸), in which the mol­ecules are linked to each other by π(S1)⋯π(C7) [1 + x, y, z] inter­actions at distances of 3.463 (3) Å (Fig. 4 ▸). No other directional inter­molecular inter­actions are observed in (I).

Mentions:
In (I), the crystal packing consists of stacks along the a axis (Fig. 3 ▸), in which the mol­ecules are linked to each other by π(S1)⋯π(C7) [1 + x, y, z] inter­actions at distances of 3.463 (3) Å (Fig. 4 ▸). No other directional inter­molecular inter­actions are observed in (I).

The title compounds, C21H22N2O2S (I) and C18H15N3O4S (II), are structural analogs of the alkaloid Thio&shy;sporine B. Both mol&shy;ecules adopt a near-planar V-shaped conformation, which is consolidated by intra&shy;molecular N&mdash;H&#8943;N and C&mdash;H&#8943;O hydrogen bonds. The crystal structure of (I) consists of mlecular stacks along the a axis, in which the mol&shy;ecules are linked to each other by &pi;(S)&#8943;&pi;(C) inter&shy;actions. In the crystal of (II), mol&shy;ecules are linked into chains by C&mdash;H&#8943;O hydrogen bonds and the chains are cross-linked into (100) sheets by &pi;&ndash;&pi; stacking inter&shy;actions.